Goodwill and Intangible Assets

12 Months Ended

Dec. 31, 2015

Goodwill and Intangible Assets [Abstract]

7. Goodwill and Intangible Assets

Goodwill

Activity related to goodwill consisted of the following (in thousands):

	2015			2014
Balance, beginning of year	$	236,130		$	193,510
Preliminary purchase price allocations for acquisitions (Note 6)		32,295			42,278
Purchase accounting adjustments		1,247			382
Effect of foreign currency translation adjustments		(289	)		(40	)
Balance, end of year	$	269,383		$	236,130

Intangible Assets with Definite Lives

Following is a summary of the Company's intangible assets that are subject to amortization (in thousands):

	Year Ended December 31,
	2015							2014
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Customer relationships	$	68,959	$	(23,397	)	$	45,562	$	54,389	$	(16,595	)	$	37,794
Non-compete agreements		1,235		(719	)		516		1,601		(866	)		735
Customer backlog		350		(88	)		262		2,341		(2,265	)		76
Trade name		100		(33	)		67		167		(148	)		19
Internally developed software		9,500		(2,499	)		7,001		8,897		(1,416	)		7,481
Total	$	80,144	$	(26,736	)	$	53,408	$	67,395	$	(21,290	)	$	46,105

The estimated useful lives of identifiable intangible assets are as follows:

Customer relationships	3 – 10 years
Non-compete agreements	3 – 5 years
Internally developed software	1 – 7 years
Trade name	1 year
Customer backlog	9 – 12 months

The weighted average amortization periods for customer relationships and non-compete agreements are six years and five years, respectively. Total amortization expense for the years ended December 31, 2015, 2014, and 2013 was approximately $13.8 million, $14.5 million, and $8.0 million, respectively.

Estimated annual amortization expense for the next five years ended December 31 is as follows (in thousands):

2016	$	12,868
2017	$	10,118
2018	$	9,109
2019	$	8,284
2020	$	5,454
Thereafter	$	7,575

8. Stock-Based Compensation

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

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